Santo Stefano is an island in the
Maddalena archipelago of northern
Sardinia,
Italy, and part of the Maddalena National Park. It is largely uninhabited and it is mainly known for its hosting of a
NATO Naval Base and Italian Navy munitions magazines Apart from the military, the only residences on the island is a tourist resort, Club valtur, which is largely occupied only during the summer months. Public access to the island is made by ferry either from
La Maddalena or nearby
Palau, on
Sardinia.